I am trying to replace my ancient original R4DS with a new Acekard or a iEdge or something else. Can someone recommend to me which one is better and your experiences and if there is a better one please let me know. M3i and Cyclops are expensive for me so I am just looking at the Acekard and the iEdge. I plan to buy from http://www.0shippingzone.com/ if there is a place that is cheaper tell me please. Thanks.